Compuprint 914N, Руководство пользователя

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Parallel Interface
The parallel interface is an 8-bits per byte TTL-compatible interface. It uses
7- or 8-bit data transfer code without parity check. You can select the parallel
interface via the Printer Setup procedure (see INTERFACE function in Chapter
3).
◆
Drive Capability
Up to 15 feet (5 m) on AWG26 min. wire size of twisted conductors on
TTL receiver.
◆
Printer Connector Type
AMPHENOL 57-40360-12-D56 or equivalent
◆
Cable Connector
AMPHENOL 57-30360-12 or equivalent Interface
◆
Signals
The interface pin assignment is described in the following table:
Signal Name Pin Number Source Description
S i g n a l
Wire Return
Wire
STROBE 1 19 HOST Clock signal which
c o n t ro l s d ata
transmission.
DATA BIT 1
DATA BIT 2
DATA BIT 3
DATABIT 4
DATA BIT 5
DATA BIT 6
DATA BIT 7
DATA BIT 8
2
3
4
5
6
7
8
9 20
21
22
23
24
25
26
27 HOST
R e p r e s e n t s
t r an s mi t t e d d at a;
l ogical "1" i s
represented by HIGH
level signal. DATA
BIT 1 (pin 2) is the
least significant bit.
ACK
10 28 PRT
Active LOW level
signal. Indicates that
d ata h a s b e en
received and stored in
the buffer.
BUSY
11 29 PRT
An active HIGH level
s i g n a l w h ich
i ndi cates that the
printer cannot accept
data.
Appendix C
C.2
A78401740-001